The majority of neurons are formed by the 24th week of gestation Both the neuron and its synapses are "plastic" and malleable Synaptogenesis occurs throughout lifetime Arborization of neurons continues, at least through adolescence Extrinsic Intrinsic 1950s - American Academy of Child Psychiatry formed

Two subtypes: Inhibited and Disinhibited Stomach aches, headaches occur during acutal or anticipated separation Questions: The parent of a child with Tourette's disorder says to the nurse, "I think my child is faking the tics because they're absent during sleep." Select the nurse's accurate response.1. "Perhaps your child was misdiagnosed."2. "This finding indicates a worsening of the child's condition."3. "Your observation indicates the medication is effective."4. "Tics are often reduced or absent during sleep." A nurse counsels the parents of a child with autistic disorder. The parents say, "We are going to completely redecorate our child's room. We think that will help." Select the nurse's best response.1. "Children with autistic disorder usually prefer that things stay the same."2. "Bright colors are often stimulating for children with autistic disorder."3. "Remember to not use rugs so that your child will not slip and fall." 4. "New toys and games will help develop your child's intellectual abilities." Social problems (do not follow rules of games/activites, appear uninterested, change topics of conversation inappropriately) Oppositional defiant disorder Pattern of negativistic, hostile, and defiant behavior lasting at least six months

More frequently in males prior to puberty. Male/female equal after puberty